RU2016138423A - CONSUMABLE FIBER FOR MEASURING THE TEMPERATURE OF THE MELTED STEEL BATH - Google Patents

Claims (20)

1. A core wire (2) comprising an optical fiber (6) and a cover surrounding the optical fiber from the side, the cover surrounding the optical fiber in several layers, one layer containing a metal tube (3) and below the metal tube (3) an intermediate layer (1) is located, characterized in that the intermediate layer (1) is formed from a material having a melting point of at least 600 ° C or at least 1000 ° C and / or at least 1500 ° C, preferably from 1000 ° C to 1400 ° C, more preferably 1200-1400 ° C. 2. The wire (2) with the core according to the preceding paragraph, in which the intermediate layer (1) is formed from fibers (4, 4a). 3. The wire (2) with the core according to the preceding paragraph, in which the fibers (4, 4a) are infinite fibers. 4. The wire (2) with the core according to one of the preceding paragraphs, in which the intermediate layer (1) forms a rope. 5. The wire (2) with the core according to the preceding paragraph, in which the optical fiber (6) is located in the center of the rope. 6. The wire (2) with the core according to one of the two previous paragraphs, in which the rope is increased in volume. 7. The core wire according to one of the preceding claims, wherein the intermediate layer (1) is formed of E-glass fibers. 8. The core wire according to one of the preceding paragraphs, in which the intermediate layer (1) is located between the metal tube (3) and the tube (5) made of plastic or cardboard, and the optical fiber (6) is inside this plastic or cardboard tubes (5). 9. The core wire according to the preceding paragraph, in which the outer diameter of the optical fiber (6) is smaller than the inner diameter of the tube made of plastic or cardboard (5), so that the optical fiber (6) is movable inside the tube made of plastic or cardboard (5) ) 10. The core wire according to one of the preceding paragraphs, in which the density of the material of the intermediate layer (1) is less than 5 g / cm ³ , preferably less than 4 g / cm ³ , more preferably less than 3 g / cm ³ . 11. A wire (2) with a core for measuring the temperature of molten metal (12), containing an optical fiber (6) and a cover surrounding the optical fiber on the side, and the cover surrounds the optical fiber (6) in several layers, while one layer contains a metal tube (3), and under the metal tube (3) there is an intermediate layer (1), characterized in that the intermediate layer (1), the entire intermediate layer (1) and / or the cover surrounding the optical fiber (6) on the side can melt directly when immersed in molten metal (12) or with direct exposure to molten metal (12). 12. The wire (2) with the core according to claim 11, wherein the wire (2) with the core has an immersion side for immersion in the molten metal (12) and the opposite side, while the intermediate layer (1) is formed so that the intermediate layer ( 1) melted during immersion in molten metal (12) on the immersed side and at the same time remained unmelted and / or porous on the opposite side. 13. The core wire (2) according to one of the preceding claims, in which the optical fiber (6) is centrally located in the core wire (2) and / or is covered with a plastic tube (5). 14. The core wire (2) according to one of the preceding claims, wherein the intermediate layer (1) has a lower melting point than the metal, preferably less than 90% or 50-85% of the melting point of the metal. 15. The wire (2) with the core according to one of the preceding paragraphs, in which the intermediate layer (1) can form in a stationary state a lump (11) of molten intermediate layer (1) surrounding the optical fiber (6) during measurement. 16. The wire (2) with a core according to one of the preceding paragraphs, in which the intermediate layer (1) can provide density in the non-molten state as a mass divided by the volume of the porous structure, which is at least 30% lower and / or at least 100% lower than the density in the molten state as mass divided by the volume of the conglomerated molten material. 17. The core wire (2) according to claim 16, wherein the intermediate layer (1) has a density in the molten state that corresponds to at least 15% and / or at least 60% of 7 g / cm³ or the total density of the molten metal. 18. A wire (2) with a core according to claim 16, in which the density in the non-molten state of the intermediate layers (1) provides open porosity behind the molten lump (11). 19. A wire (2) with a core according to claim 15, wherein the rate of removal of the lump (11) of the molten intermediate layer (1) from the surface of the protrusion (10) of the optical fiber may depend on the density difference between the liquid lump (11) and the molten molten metal (12). 20. A wire (2) with a core according to one of the preceding paragraphs, wherein the wire (2) with a core or a metal tube (3) is not gas-tight, in particular by means of an overlap seam (15), or is gas-tight, in particular by means of a lock seam, for example, a secret lap seam (16) or a lying fold (17).